Synthesis of isoxazolyl pyrrolo [3,4-d]-7,8-dihydropyrazoles by [3+2] cycloaddition of isoxazolyl maleimides with nitrileimines

被引：0
作者：
Rajanarendar, E [1 ]
Ramu, K [1 ]
Rao, EK [1 ]
机构：
[1] Kakatiya Univ, Dept Chem, Warangal 506009, Andhra Pradesh, India
来源：
INDIAN JOURNAL OF HETEROCYCLIC CHEMISTRY | 2005年 / 15卷 / 01期
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中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
The reaction of nitrileimines generated in situ from the arylhydrazones in the presence of chloramine-T with isoxazolyl maleimide I results in isoxazolyl pyrrolo [3,4-d]-7,8dihydro pyrazoles 2. The structure of compounds (2a-g) were confirmed by elemental analysis, IR, PMR and mass spectral data. The dienophile 1, anthracene and anhyd AlCl3 in CH2Cl2 at room temp yielded Diels-Alder adduct i.e. 9,10-dihydro-anthracene9,10-endo-N-isoxazolyl maleimide 3.
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页码：23 / 26
页数：4
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